(19)
(11)
EP 1 741 179 A1
(12)
(43)
Date of publication:
10.01.2007
Bulletin 2007/02
(21)
Application number:
05736651.0
(22)
Date of filing:
25.04.2005
(51)
International Patent Classification (IPC):
H02P
5/00
(2006.01)
G03G
21/14
(2006.01)
G03G
15/01
(2006.01)
H02P
6/10
(2006.01)
(86)
International application number:
PCT/JP2005/008320
(87)
International publication number:
WO 2005/104344
(
03.11.2005
Gazette 2005/44)
(84)
Designated Contracting States:
DE FR GB IT NL
(30)
Priority:
26.04.2004
JP 2004129906
(71)
Applicant:
Ricoh Company, Ltd.
Tokyo 143-8555 (JP)
(72)
Inventors:
IMAI, Satoshi, c/o RICOH COMPANY, LTD.
Tokyo 143-8555 (JP)
KOIDE, Hiroshi, c/o RICOH COMPANY, LTD.
Tokyo 143-8555 (JP)
KAWASHIMA, Yasunari, c/o RICOH COMPANY, LTD.
Tokyo 143-8555 (JP)
(74)
Representative:
Lamb, Martin John Carstairs
Marks & Clerk 90 Long Acre
London WC2E 9RA
London WC2E 9RA (GB)
(54)
ROTOR DRIVING CONTROL DEVICE AND IMAGE FORMING APPARATUS